Boston, MA Massachusetts Mutual Life Insurance Co. (MassMutual) unveiled architectural renderings of 10 Fan Pier Blvd., a 17-story commercial tower located at Fan Pier on the city’s waterfront. The building will serve as MassMutual’s new campus, as the company expands its the build-to-suit tower that enhances the streetscape of the mixed-use neighborhood.presence in the city and across the state.